Boat rasier



J. H. SMITH Dec. 6, 1960 BOAT RAISER 2 Sheets$heet 1 Filed Oct. 10, 1956INVENTOR.

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Y MM J. H. SMITH BOAT RAISER Dec. 6, 1960 Filed Oct. 10, 1956 2Sheets-Sheet 2 INVENTOR.

J OHN H. SM ITH BY ZiT IORNEYS A United States Patent cc BOAT RAISERJohn H. Smith, Allen Park, Mich., assignor to Willard Smith Filed Oct.10, 1956, Ser. No. 615,154

1 Claim. (Cl. 214-1) My invention relates to a new and usefulimprovement in a boat raiser adapted for mounting in the water at theshore or bank so that the boat may be moved over the raiser and theraising mechanism then operated to lift the boat clear of the water. Inthis way, the boat is, when not in use, raised to an elevation where thewaves would not have access to the boat.

It is an object of the present invention to provide a boat raiser ofthis class which will be simple in structure, economical of manufacture,durable, compact, easily operated, and highly efficient in use.

Another object of the invention is to provide a boat raiser of thisclass having a pair of cradles which will serve to engage the bottom andthe sides of the boat and which are provided with lifting arms which maybe elevated to raise the boat clear of the water.

Another object of the invention is the provision in a mechanism of thisclass of boat engaging plates or pads which may be adjusted to conformto the contour of the boat and which may rock as the boat is raised fromlowered to elevated position.

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made inthe detail of the structure illustrated without departing from theinvention and it is intended that the present disclosure shall beconsidered to be but the preferred embodiment.

Forming a part of this specification are drawings, in which:

Fig. 1 is a top plan view of the invention;

Fig. 2 is a side elevational view of the invention;

Fig. 3 is a front elevational view of the invention;

Fig. 4 is a side elevational view of a fragment of the invention.

As shown in the drawings, the invention comprises at its four cornerssupporting bases or feet projecting upwardly from each of which is a rod9. At each end of the boat I provide a transverse grid composed oftransverse tubes 11 and 12 which are connected by vertical cross bars13, and having on each end a tube 17 which is adapted to slip over therod 9 and which may be secured by the set-screw 17a. By adjusting thesleeve 17, the raising device may be adjusted so that the boat may be,when in raised position, at various positions of elevation.

Embracing each of the rods 9 and resting upon the upper end of thesleeve 17 is a tubular member 18. The tubular member 18 at correspondingopposite sides is connected by longitudinally directed tubes 14 and 15,each of which are interconnected by vertical tubes 16. Secured at theirlower ends to each of the upper tube and projecting upwardly therefromare tubes 19. Extending longitudinally of the structure and secured tothe upper ends of the tubes 19 on each side of the structure is alongitudinally directed tube 20, thus forming a framed enclosure intowhich the boat 96 may be moved.

At some of the upwardly extending tubes, I provide braces consisting ofa tube 22 extending outwardly from 2,963, l Patented Dec. 6,1960

the tubes 20 and connected to the tubes 19 by the diagonally extendingbrace 23.

Between the tubes 14 and 15 at the rear end is secured a plate 25 and asimilar plate 26 is secured at the forward end. The plates 25 serve as abearing for the tube 27. Fixedly secured to this tube 27 is an arm 28connected at its end to the bars 29 and 30 which project upwardlytherefrom and having the spread apart portions 29a and 30a engaged bythe bight or cross bar 31.

Bearing against the lower face of the cross bar 31 is a pad 32 which isfixedly mounted to a piston rod 33 extending upwardly from the piston 34slidably mounted in the cylinder 35. The cylinder 35 communicates with apump 37 operated by the handle 38 so that fluid may be forced into thecylinder 35 to move the piston 34 upwardly. This pump 35 rests upon asuitable platform 36 mounted on the longitudinally extending upper tube20. The construction is such that upon movement of the piston 34upwardly the member 27 may be rocked to the left of Fig. 1 or Fig. 2,the arm 28 being shown in dotted lines in its upwardly rocked position.

Positioned inwardly of the tubes 14 and 15 and fixedly mounted on thetube 27 is an arm 38a which is engaged by a bar or link 39 to an arm 40fixedly mounted on the tube 41 which is journaled in the plates 26.Secured to and projecting outwardly from the tube 41 are the tubes orarms 42 and 43 in the ends of which is journaled a tube or rod 44.Embracing this tube or rod 44 are sleeves 45 and 45a which may be fixedlongitudinally of the tube or rod 44 by means of the set-screws 46.Pivotally mounted at its lower edge, on the tube 45, is a plate or pad48, and a similar plate or pad 47 is swingably connected at its loweredge, on the tube 45a. Secured to the lower face of each of the pads 47and 48 is a pair of spaced apart plates 49 which embrace the tube or rod44 and each of which is provided with spaced apart openings 50 throughwhich may be projected a bolt for limiting downward swinging movement,this bolt engaging the rod or tube 44. The parts 45, 45a, 47, 48 and 49comprise a swingable saddle.

Secured to and projecting outwardly from the tube 27, as shown in Fig.1, are lifting arms 51 and 52 in the ends of which is journaled a rod ortube 53 corresponding to the member 44. Engaging pads 54 and 55, similarto the pads 47 and 48 and constructed in like manner, are carried by thetube or rod 53.

Pivotally mounted on the tube 44, between the tubes 45 and 45a, is atube or collar 56 to which is fixedly mounted one end of thelongitudinally extended tube or rod 57. The other end of the tube 57 isfixedly mounted on the tube or collar 58 which is pivotally mounted onthe tube 53 in the same manner as the collar 56.

In operation, when the pads are lowered as shown in Fig. 1 or Fig. 2,and the boat 96 is moved into position, a movement of the piston rod 33upwardly will effect a rocking of the members 27 and 41, thus swingingthe lifting arms 42 and 43 and the lifting arms 51 and 52 upwardly so asto lift the boat 96 into the dotted line position shown in Fig. 2. Theboat will remain in this elevated position until the hydraulic pressurein cylinder 35 is relieved in a well-known manner, whereupon the weightof the boat would move the mechanism to its lowered position.

It is believed obvious that the invention as described is constructed ina sturdy manner, while at the same time, it is light and may be easilyand quickly operated.

What I claim is:

In a boat raising device of the class described the combinationcomprising: a structure having a pair of vertically extended rods at theforward end thereof; a pair of vertically extended rods at the rear endthereof; a base '3 on the lower end of each of said rods; transverselyextended means for adjustably connecting together the rods at theforward end thereof; transversely extended means for adjustablyconnecting together the rods at the rear end thereof; a slidable memberslidable upwardly and downwardly on each of said rods above saidtransversely extended means; longitudinally extended means forconnecting together at one side of said structure the slidable memberson the rearward and forward rods at the said one side of said structure;longitudinally extended means for connecting together theslidablemembers on the rearward and forward rods on the other side ofsaid structure at the opposite ends; a plate mounted at the forward endof each of said longitudinally extended means for connecting saidslidable members; a plate mounted on each of said longitudinallyextended means for connecting: said slidable members at the rear end; afirst rotatable member extended across the structure and rotatablysupported by the plates at the forward end thereof; a second rotatablemember extended across the structure and rotatably supported by theplates at the rear end thereof; a rigid arm projecting outwardly andupwardly from each of said rotatable members at one side of saidstructure; a bar hingedly connected at one end thereof to one of saidrigid arms and at the other end thereof to the other of said rigid arms;a pair of spaced apart arms extending upwardly and forwardly from eachof said rotatable members; a transverse rod pivotally mounted betweenthe outer ends of each of said last named pair of arms on each rotatablemember; a pair of spaced apart boat saddle pads slidably mounted on eachof said transverse rods for sidewise adjustment thereon; means foradjusting the angularity of said pads; a longitudinally extended tubehaving one end thereof pivotally connected to one of said transverserods between the pads thereon and the other end thereof pivotallyconnected to the other of said transverse rods between the pads thereon;and, hydraulic means for rocking said rotatable members in vunison witheach other.

References Cited in the file of this patent UNITED STATES PATENTS481,405 Kinipple Aug. 23, 1892 2,151,394 Rogers Mar; 21, 1939 2,201,147Bary May 21, 1940 2,230,014 Raven Jan. 28, 1941 2,505,832 Lange May 2,1950 2,585,664 Le May et a1. Feb. 12, 1952 2,599,670 Thomas June 10,1952 2,712,874 Murray July 12, 1955

